BNV 6116 HRP

Critical Analysis

60 Severn Street

HASNYAN HAIDERS12777192

Critical Analysis BNV 6116 HRP

ContentsIntroduction...........................................................................................................................................2

Key Issue – Sustainability.......................................................................................................................2

Option 1............................................................................................................................................3

Option 2............................................................................................................................................4

Option 3............................................................................................................................................5

Key Issues – Design................................................................................................................................6

Option 1............................................................................................................................................7

Option 2............................................................................................................................................7

Option 3............................................................................................................................................8

Key Issue - Existing Buildings Condition.................................................................................................9

Option 1..........................................................................................................................................11

Option 2..........................................................................................................................................11

Option 3..........................................................................................................................................12

Results.................................................................................................................................................12

Lessons Learnt.....................................................................................................................................14

References...........................................................................................................................................16

Appendix.............................................................................................................................................17

Word Count.........................................................................................................................................25

pg. 1

Critical Analysis BNV 6116 HRP

Introduction Mr M Hilliard the owner of Birmingham Masonic Centre has asked us to help with his project to update and extend his property. The project has come with its own unique challenges, obstacles and new experiences. Appendix Figure 1

This project presented many limitations, it has provided a deeper understanding and approach then previous projects I have faced. The extension was only specific sections. Appendix Figure 2 & 3

The building is mid-Victorian constructed over three different time periods. The oldest part of the building being the main two halls on the ground floor which date back to the 1827. From here the building was rebuilt and the front façade was added. The building is listed because it was the first synagogue in Birmingham.

Appendix Figure 4

Key Issue – Sustainability

As the client required the improvement of the buildings sustainable credentials with optimising the most natural lighting and to include a ‘Grey Water Reuse system’ within the building’s design, the sustainable aspect of the project was a crucial aspect to the project. Appendix Figure 5

pg. 2

The Front Façade of the Building

In this photo you can see the buildings features and characteristics

Critical Analysis BNV 6116 HRP

(Geolax, 2009)

My main objective was to ensure that the client’s requirements were met in the best possible and most optimal, while considering methods to enhance the requirements.

There were not many opportunities to include a passive sustainable method in improving the sustainability. Appendix Figure 5

With technology consistently moving forward and towards a more sustainable future, there are many options with new sustainable technologies for buildings. When considering which sustainable technologies to incorporate into the design all factors were taken into consideration.

Option 1

Solar PV panels are a very popular choice with sustainable technology, many people are utilizing the suns power and installing solar PV panels to do so.

(Solarhelp, 2010)

Advantages

This method is clean green energy, and is provided free from the sun. There is hardly any maintenance or operating cost so for the users of 60 Severn Street this would be essential. They can be installed easily especially in the case of a flat roof. This would there for be another plus point for adding it to the design.

The designer risk assessment which was conducted found that this method was one of the least hazardous. This combined with the a feasibility study which was conducted found that

pg. 3

Example diagram of a grey water reuse system, which was added in to the design of the building as requested

Critical Analysis BNV 6116 HRP

due to the prices decreasing for this sustainable method and with government schemes in place to help you pay for them this method would be beneficial for the building in terms of costs.

Disadvantages

However a further study was conducted to the efficiency of the PV panels with the practicality and it was found that this method highly depends on the amount of sun it is able to absorb, so the location for the panels is crucial. Once the sun path of the most optimal location of the panels in the design was uncovered I realised that due to the location of the building and its new flat roof they will not be able to absorb enough sun to be at their maximum potential.

Option 2The second option I considered was a heat recovery ventilation system. I came to this choice due to the buildings type. The building surveys lead me to discover that there was a considerable amount of condensation, this combined with the uncontrolled room temperatures due to the amount of heat loss being lost through the building’s design meant a feature of this type would be beneficial. As I entered the basement you get a sense of high humidity due to lack of air circulation.

(Fantech, 2015)

pg. 4

The sun path for the location of 60 Severn Street is not the most optimal for the orientation for the building.

Critical Analysis BNV 6116 HRP

Advantages

The advantages of system would be practical for the building’s design and beneficial. It supplies clean fresh air circulation throughout the building, energy efficient ventilation, it helps to eliminate condensation which can prove to be a problem if not dealt with and finally it adds to the buildings overall comfortable atmosphere.

Including this feature to a building also benefits building regulations which was another requirement by the client. This method helps the building comply with part F for means of ventilation, part L on the conservation of fuel and power.

Disadvantages

However the problem I found with this method is that it is not practical in the terms of installation and maintenance. It can be quite costly depending on the dwelling and due to the size of the Masonic Centre it would be. This combined with the fact many alterations would have to be made to the building just for it to work effectively it seemed to be impractical in terms of feasibility and time.

Option 3The final method considered was a rain water harvesting system. Due to the design of the building and all its different types of roofs I believe it would be very optimal to install a rain harvesting system on the new flat roof.

Advantages

The pitched roofs around allow for a slope for the rain to allocate itself onto the flat roof along with the rain the flat roof collects itself. This method would utilize all the rain water and use it ways efficient ways for the water use of the building.

(lowenergyhousing, 2015)

The maintenance and installation costs are low. It is practical and can be used very efficiently due to the building’s design and location, this is because works in the harvesting

pg. 5

Design image of the rain water technology

Critical Analysis BNV 6116 HRP

systems favour. This sustainable method can also be combined with the ‘Grey Water Reuse System’ which would further the buildings benefits.

Disadvantages

Nonetheless this option highly depends on the weather, due to this it will not always be working efficiently. You will never be able to control the variables of water usage as the weather is unpredictable.

Key Issues – Design

The design process of a project is influential to the outcome and end result, it is important to make the right decisions and to do your research beforehand. As a designer it is important that I meet all the needs required in the most resourceful way possible.

An image of the old First floor

An image of the new first floor plans. Appendix Figure 7

The main design issue I came across with this project was which style and type of roof design to use for the new extension of the building. There were no exact requirements made for the type of roof.

There are many different aspects to consider when choosing a type or design of roof, such as cost, maintenance, life span and building regulations.

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Critical Analysis BNV 6116 HRP

Option 1The first design proposal I came across was to simply replicate the existing style of roof already on the building which is a pitched roof. A pitched roof normally comprises of a timber structure which come together to form a pitch.

Advantages

This would give the building a sense of uniformity. With pitched roofs there are many variations and styles you could choose from for your design. Pitched roofs have a longer life span then other roof types, they are stronger and better at weight distribution along the roof. This all helps when weight is added such as snow.

Disadvantages

But with pitched roofs there is always an access problem. The results of the current conditions survey on the building also indicated that the existing pitched roofs needed much attention due to the condition they were already in. Pitched roofs also cost more than other roofing methods.

Option 2 The second design was a flat roof. The design would consist of multiple layers on top of one another on a flat surface or a slight angle of degree depending on your design. For 60 Severn I’d recommend a strong long lasting roof design.

Advantages

As the flat roof option was the cheapest, this worked well with the feasibility study. The roof allows for easier access. This option allows for more sustainable features to be added to the flat roof.

A flats roof life expectancy tends to be around 10 years and was not theoretical. However it was found that you could add layers on the flat roof to help with the life expectancy of the roof, to help to structural integrity and performance.

Disadvantages

Conversely even though the initial cost is low there tends to be more maintenance with flat roofs, the gutter system will have to be monitored to make sure it does not get blocked and also the overall integrity of the roof will have to be checked to make sure there are no leaks and it is still preforming efficiently.

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Critical Analysis BNV 6116 HRP

Design view of the roof plan

Option 3 The third design is a green roof for the new build section. Green roofs are very economical and are very architectural add to the buildings image and credentials. Appendix Figure 6

Advantages

The advances are the economical factor, it’s a new eco-friendly technology method which is sustainable. Also it increases your roofs life expectancy up to 3x times the amount. This design proposal allows open access to the roof and can be used as an enjoyable outside space.

(Cookjenshel, 2013)

Disadvantages

However there are many complications with this design choice. The main obstacle would be the planning permission needed for this choice, this would be difficult because the Masonic centre is grade II listed. Appendix Figure 9

There are many costs with this choice, initial installation costs and maintenance costs. There would also be a need for more structural support, and finally it would be difficult for the users to service the roof space.

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Critical Analysis BNV 6116 HRP

Key Issue - Existing Buildings Condition As this project involved an existing building the current condition of the building therefore plays an important role. A survey was conducted on the condition of the building, and I realised that the current state is a vital issue. Appendix Figure 10

Photos of the existing condition of the building

Exterior walls showing signs of damp penetrationBricks out of place on the exterior walls

Cracks in the walls

Places have already been repaired, you can also see many more places need attention to

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Critical Analysis BNV 6116 HRP

Basement walls and how the brickwork is damaged

Ceiling of the rehearsal room and you can see that it is sagging

kitchen walls show sign of damp

Exposed roof space along with its elements

One of the main issues I found was to either repair certain elements or simply abolish and rebuild new elements. This issue occurred with the party wall alongside the property.

The party wall shared with 60 and 62 Severn Street’s condition was highlighted as a priority which needed attention. As the party wall itself plays an important role with the plans of the project, it is imperative to make the right decision on how to rectify the issue.

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Critical Analysis BNV 6116 HRP

I came across three viable options which were considered as possible routes of action for the party wall.

Option 1 The first option was to repair the wall to its original form, under pin the foundation and build on the wall upwards for the new build section of the building. This mean repairing the walls structure, repointing the mortar where it was needed and replacing any segments.

Advantages

This options cost was lower than that of any other options and it also did not require much labour for the amendments to be completed. With the wall returned to its original state this would then benefit both users on either side of the party wall.

From the survey conducted it was noted that the building sharing the party wall may have some asbestos infestation on their roof. If the wall was to be repaired on just the Masonic Centre’s side, this would then keep the builders at less risk.

Disadvantages

However even though the costs low you must consider that with the wall repaired will not meet requirements needed with the new build.

An additional point to consider is that the wall will have to meet building regulations therefore it is likely that it would have to be updated to make it more thermal efficient. A single brick cavity wall’s thermal efficiency does not meet current regulations. Appendix Figure 13

Option 2An alternative option considered was to build an entirely new wall up alongside of the existing party wall within the boundaries of the property. This would then mean that there

pg. 11

On the left an image of the existing party wall, the right shows the new plans for the wall

Critical Analysis BNV 6116 HRP

would be less issue with party wall act and the property on the other side of the wall are less likely to not have an issue.

Advantages

This new wall would meet all building regulations, it would belong only to the owners of the masonic centre so you would not have to worry about any party wall issues. This option allows for more design opportunities for the new wall.

Disadvantages

However this option was a more costly option but considering when the condition survey was conducted, it was noted that the property adjacent to party wall could contain asbestos on the roof. This was found to be highly likely considering the type of roof.

This option it would mean less space for the buildings extension and there is already an issue with space availability.

Option 3 This option was to destroy the existing structure and rebuilding from the foundation up, this would there for be a new wall which would meet all structural needs of the new build along with meeting all current building regulations. Appendix Figure 11

Advantages

With this option I would be able to comply with all the up to date regulations for the new wall, also with new technology to be included could make the wall energy efficient. This would then help the buildings energy use by reducing heat loss.

Disadvantages

However this is a costly option and time consuming option. There is also the legal obstacles which may appear with the fact that this wall is party wall.

Results

In retrospect to the design issue, a pitched roof was not practical use of the building, it also limited the sustainable features which came with the design. The designer risk assessment conducted showed there were more risks with this option rather than the others. Appendix Figure 11

The option to include a green roof was just not practical, required too much maintained and costs. The choice made was to go with a flat roof, the feasibility study found this to be the cheapest method, it also gave more options in terms of sustainable feature which could be incorporated in the design.

The option for sustainability I choose was the rain water harvest system, this could be used in the new added toilets on each floor, and can be incorporated to work with the grey water reuse system. This would then work well in the building and be the most useful.

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Critical Analysis BNV 6116 HRP

Depending on the correct tank size, I would recommend a 500 litre tank, you could save on average anything between 35% to 45% on your water bill, even up to 55% in rainy seasons. Appendix figure 15.

(Freewateruk, 2015)

The buildings location meant that the PV panels could not utilise the suns energy to work efficiently. According to money experts direct, ‘the average solar PV panel user saves around £130 per year if the requirements are correct’. (Moneysavingexperts 2014)

The heat recovery system however would be beneficial for the building, but the plans for the new design only included sections of the building which would be all new, so the thermal efficiency of the new build would naturally perform better than that of the rest for the building, and with a new window technology the condensation would not be a concern.

The third issue revolving around the existing condition was the party wall. I resulted in choosing the option to rebuild the entire wall. The new party wall would provide better overall thermal efficiency, you would not have to consider too much in the terms of maintenance considering it is a new build. With the extra added support the buildings integrity would therefore be increased allowing the building to be available for a longer period, which was one of the client’s requirements. Simply repairing the wall will not meet up to date building regulations, Part L will need the wall to meet new thermal efficient values. Appendix figure 14. The option considered will have to satisfy these requirements:

Decoration and renovation Fire protection Thermal resistance and changes to 'thermal elements' Weather Resistance Weight (Loading) (Planning Portal, 2015)

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Critical Analysis BNV 6116 HRP

Lessons Learnt

I have improved my knowledge and understanding in the following competencies:

Building pathology: I am now able to identify the types of defects found in the different time periods of the building.

Construction technology, environmental services, and sustainability: I now have a better understanding of PV panels, the return of certain sustainable technologies, and I now am able to critically compare by seeing which is the most optimal for the purpose.

Design and specification: I now have a better understanding of the need to connect new to existing buildings along with the problems along the way.

Inspecting: I have undertaken a measured survey as part of this process, which has enhanced my inspecting competency.

Legal and regulatory: I know have an understanding of the party wall act and the requirements along with the various notices which need to be served for each purpose.

Mandatory competencies: client care appreciating the importance of developing the clients brief to provide them with a solution which best suits their needs

Communication: the production of different types of drawings for different types of purposes.

Team working: enhanced team working and information distribution to other disciplinary.

Code of conduct: reference to relevant RICS guidance such as the code of measured practice, historic conservation and sustainable guidance

The first aspect of the project I would like to have changed is the knowledge I had going into the design process. When I came to designing the new build I found myself stuck as to how the original building was constructed and the elements of the building this meant by this stage I had to do more research into the type of building and its details, because this all had an impact on how I can design the new build.

With retrospect and hindsight with the issue regarding sustainability I would not have chosen a rain water harvesting system. I have subsequently come across this a heat recovery system to be a far better solution. At the time I was seduced by the idea of water usage efficiency, is being one of the clients requirements a Grey water Reuse system I thought at the time another Rain water harvesting system would then benefit the clients require mentees further. However I didn’t fully appreciate the other possible technologies.

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Critical Analysis BNV 6116 HRP

If I was to recreate the floor plans instead of leading the design with what is more practical and trying to meet all the clients requirements I would have liked to had more building regulations behind my design I would like to have had more statistics in the performance of the building.

When it came round to the costings aspect I realised that my plans were quite costly and if I was to go back and rearrange certain aspects I would like to have made it more affordable. I would change certain design elements; for example in cases where I had reconstructing entire elements of the building rather than adjust and using as much as the existing structure as I possible. Appendix Figure Costings Table 12

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Critical Analysis BNV 6116 HRP

References 1. Cookjenshel (2013), ‘Green Roofs’, Available at: http://cookjenshel.com/green-roofs/ ,

[Accessed on 11th April 2015]2. Fantech (2015), ‘Benefits of heat recovery’, Available at:

http://www.fantechhhv.co.nz/pages/whyVentilate.asp?page=HR , [Accessed on 10th April 2015]

3. Free water UK, (2015), ‘water-the big picture’, Available at: [Accessed on 12th April] http://www.freewateruk.co.uk/domestic-rainwater-I.htm,

4. Geolax (2009), ‘Grey Water Recycling Systems’, Available at: http://www.geolax.co.in/grey-water-recycling-system.html , [Accessed on 10th April 2015]

5. HM Government, (2014), ‘Part L’, Available at: http://www.planningportal.gov.uk/buildingregulations/approveddocuments/, [Accessed on 12th April 2015]

6. Low energy housing, (2015), ‘Low Energy Housing’, Available at: http://www.lowenergyhouse.com/rainwater-harvesting.html , [Accessed on 11th April 2015]

7. Money Saving Experts, (2014), ‘should you buy them or get them free’, Available at: http://www.moneysavingexpert.com/utilities/free-solar-panels , [Accessed on 12th April 2015]

8. Planning Portal, (2015), ‘External Walls’, Available at: http://www.planningportal.gov.uk/permission/commonprojects/externalwalls, [Accessed on 12th April]

9. Planning Portal, (2013), ‘Application for Listed Building Consent for Alterations, Extension or Demolition of a Listed Building’, Available at: http://www.planningportal.gov.uk/uploads/1app/guidance/guidance_note-listed_building_consent.pdf, [Accessed on 12th April]

10. Solar help (2010), ‘Solar PV panels for your home’, Available at: http://www.solar-help.co.uk/solar-panel-technology/solar-pv-photovoltaic.htm, [Accessed on 11th April 2015]

11. The Green Age, (2012), ‘What is Grey water’, Available at: http://www.thegreenage.co.uk/tech/greywater-recycling/, [Accessed on 12th April]

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Critical Analysis BNV 6116 HRP

AppendixFigure 1

Client’s Brief:

Client: Mr M Hilliard, Birmingham Masonic Centre, 60 Severn Street, Birmingham, B1 1QG Date of instruction 29th September 2014

The Brief:

Birmingham Masonic Centre, are located in a grade 2 listed building located at , 60 Severn Street, Birmingham, B1 1QG, the property is well over 100 years old and was constructed over 3 different periods. Due to the closure of nearby facilities this property is now in high demand and requires a significant overhaul to provide a suitable and sustainable building for the next 20year years.

In this respect the client requires the following:

Extension and redesign of the rear first floor area (C&D) to provide a new commercial kitchen, male, female and disable toilets, lift access from the ground floor and 2 No rehearsal rooms ( these rooms should be a minimum of 16m2 in floor area) The extension is to cover the full width of the site.

Reconfiguration of the ground Floor kitchen and Toilets (F) to provide a small kitchenette for making coffee, male, female and disabled toilets and the lift to the first floor. The access to the basement must be maintained.

Refurbishment of the first floor female toilets and second floor male toilets to the front of the building to make each set accessible and unisex. (A &B)

Enclosing the open fire escape and providing disabled access to the ground floor and a new internal staircase to the first floor.

In addition to this the client wishes to improve the sustainable credential of the building, including element for reuse of water in toilets, both energy saving and energy production and best use of natural light as well as ensuring compliance with the Equality Act.

Figure 2

Ground floor Reconfigure ground floor kitchen for kitchenette

Provide male female and disable toilets A lift from ground floor to first Provide disable access to building

First Floor Extend width of building to boundary Reconfigure layout to provide two 12m2

rehearsal rooms New commercial kitchen Male, female and disable toilets

Second Floor New uni-sex toilets

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Critical Analysis BNV 6116 HRP

Other Optimise natural lighting Add a grey water re-use system Improve sustainable credentials

Figure 3

Layout and areas C D E F.

Figure 4

Type of construction:

60 Severn Street, Masonic Centre Birmingham; is a historic grade two listed building dating back to 1809. The building has undergone changes, such as being, remodelled, altered, repaired and redesigned.

Before the client undertakes the project for this building it would be suggested that he looks at the condition of the existing building, if there are any defects at this present moment and finally the types of defects you would expect to find in a building of this construction type and age.

An extra room such as the dining room was added around 1871 to 1874. From here the front façade was remodelled, redesigned and added to by Essex and Nicol Architects in the city and has remained little altered today. (English Heritage 2014)

The building is your traditional construction type of property; it has your exterior brick work, both pitched roofs with updated concrete interlocking tiles and flat roofs with felt, concrete solid floors at

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Critical Analysis BNV 6116 HRP

the base and ground floor of the building with timber suspended floors for the rest of the floors. Timber framed doors and windows.

The building is a mid-Victorian early Victorian property, the building itself was built over three different time periods. The oldest part of the building being the main two halls on the ground floor which we believe date back to the 1827. From here the building was rebuilt and the front façade was then added.

The building façade is three storeyed but only single storeyed towards the rear. Due to the front being redesigned in 1891 the architecture is of a Victorian style. It is a red brick design with four separated bays. The bays were separated by pilasters. The windows are timber framed three by three panes. At the top is a flat roofed attic dormer which has 8 small windows. To the north eastern side the building is fully rendered. Whereas the south western side is attached to the building next door, this is just the front first section of the building.

The building itself is a unique quite an old building with its own individualistic features. Due to the building was built over three different time periods, this is visible in the construction of the building. You can see the differences in the technology of the construction and design of the building, which all had to be taken into consideration in the projects planning stage.

Figure 4Grey water reuse system:

Water used in homes has long been thought of in terms of clean drinking water (known as potable water) coming into the house from the mains and sewage going out. However, the wastewater from baths, showers, washing machines, dishwashers and sinks fits somewhere in-between and this is referred to as greywater, which typically makes up between 50-80% of households waste water.

Roughly a third of the water used in households is used in toilets, which comes into contact with human waste and is known as black water. Greywater is much easier to treat and recycle when compared with black water because there is no faecal matter that is a haven for harmful bacteria and disease causing pathogens.

If recycled properly, greywater can save approximately 70 litres of potable water per person per day in domestic households, therefore greywater recycling is one of a number of water solutions that we should look to in order to decrease our usage.

If your house is metered, recycling greywater can significantly reduce the volume of water you use thereby saving you money on your water bills. (Thegreenage, 2012)

Figure 5 Passive technology:

As mentioned above there were not as many passive options available as active this was due to the limitations with the buildings location and layout. Due to its orientation with the additional aspect that only one section of the buildings structure was to be altered not much could be included in respects to passive sustainability.

Passive sustainable technology requires the design of the building to enhance the energy flow by itself own materials and elements. So this would be allow air passage to cool down the facility and help with ventilation. However an active sustainable feature would normally include some sort of equipment which would control the facilities temperature, such as an underground heat source

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Critical Analysis BNV 6116 HRP

pump. With this in mind I decided to include active sustainable methods as my main focus to improving the buildings sustainable credentials, seeing as there was more possibilities and less limitations. However I was still able to incorporate passive technology into the design.

I included many windows into the design along with skylights on both the pitched roof and flat roof to optimise the amount of natural lighting the building receives. This was also another requirement by the client.

Figure 6Roof Comparison:

Here is a link to article which will cover the pros and cons of each roof design:http://www.homebuilding.co.uk/advice/key-choices/roofing/flat-roofs

Figure 7Floor plans all levels:

Ground Floor:

First Floor:

Second Floor:

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Critical Analysis BNV 6116 HRP

Figure 9Grade two listed buildings:

What is a listed building? A 'listed building' is a building, object or structure that has been judged to be of national importance in terms of architectural or historic interest and included on a special register, called the List of Buildings of Special Architectural or Historic Interest. (Planningportal, 2013)

For a grade two listed building you will find that you may need listed buildings consent to alter the building structural appearances.

Figure 10Condition Report:

Here is a section of the conditions report which describes the external walls, the party walls and the existing roofs:

2.0 Roof 1 This roof is a pitched roof, with clay tiles

The roof seems to have slight waves in the structure, from a visual inspection this could be due to the recently added clay tiles, the added weight seems to have had an effect on the supporting aids, but without opening the roof to check you cannot be certain. The tiles seem to have a lot of vegetation and moss growing in and around them which could cause thermal expansion if not dealt with.

2.1 Roof 2 This roof is located above section C, it is the same styled pitched roof as the other with clay tiles

With this roof you can see the waves in the structure more clearly, once again this could be due to the added clay tiles, the roof supports may not be able to take the extra weight, the supports should be checked, and further investigation is required. The tiles on this roof also have a lot of vegetation on the which could lead to problems in the future

2.2 Roof 3 This is the current flat roof located in section D, (See appendix figure 1) the flat roof is a traditional asphalt covered roof

The current condition of the flat roof is defective, it is damaged in many places, holding still water in places, and there is vegetation and moss growing in parts, this could cause damage to the structure below and the walls connected to the roof. The roof will need replacing

3.0 Guttering/Rain water goods

There is a cast iron guttering along the roof number 2

The cast iron guttering is showing signs of corrosion which could lead to the gutter failing, the gutter also seems to have some blockage in the system which could be detrimental

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Critical Analysis BNV 6116 HRP

to the building if not attended to4.0 Exteriors walls Traditional brickwork

constructionThere are many places in which the exterior walls of the building need attention, you can already see that there are patches that have been repaired and replaced. Many of the brick faces have degraded; some bricks have moved out of place, there are cracks in the brick work and the mortar. There is also penetrating damp in some places of the exterior walls. These defects need attention, repairs will be needed, rendering, and replacement of sections is also needed

Figure 11Designer Risk assessment:

DRA for the party wall:

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Critical Analysis BNV 6116 HRP

DRA for the Flat roof:

Figure 12Costings:

Flat Roof Item No.

Description UNIT

Quantity

Cost Total Time Adjust

Location Adjust

1 Classic bond one piece EPDM rubber roofing covering 20mm

M2 145m2 £96.52 (Rubber4roofs 2015) (Figure 1)

£14000 14000 X 264 215

=£17200

No adjustment required, standard fixed price.

=£17200

2 20mm thick polymer modified asphalt roofing including roofing underlay; includes vapour barrier (U-value = 0.13)

M2 145m2 £85 to £110£100

£1450014500 X 264 215

=£17900

West Midlands Regional Adjustment= 0.99

=£ 17800

3 Softwood flat roof, structure only comprising roof joists; 100mm x 50mm

M2 145m2 £41 to £53=£45

£65256525 X 264 215

West Midlands Regional Adjustment= 0.99

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Critical Analysis BNV 6116 HRP

=£8000 =£7950

4 Fire barriers insulation; Rockwool fire barrier or other equal and approved; between top of suspended ceiling; two 50mm layers by 900mm wide one hour

M2 145m2 £53.25 £77007700 X 264 215

=£9500

West Midlands Regional Adjustment= 0.99

=£9400

5 Facia Boards, timber framing, master board, 6mm thick, 150mm wide(Figure 2)

M 45m £5.35 £240 240 X 264 215

=£300

West Midlands Regional Adjustment= 0.99

=£3006 Flashing,

1.80mm thick, (code 4), Lead flashing, wedging into groove, 150mm girth (Figure 3)

M 39m £11.76 £460 460 X 264 215

=£565

West Midlands Regional Adjustment= 0.99

=£560Element total =£53210 =

£53500

Figure 13Part L:

Here is a link to part L of the approved documents, this will provide you with the information regarding the requirements of walls: http://www.planningportal.gov.uk/buildingregulations/approveddocuments/

Figure 14Manufacture information regarding Rain water harvesting systems:

Here is a link for the manufactures for a rain water harvesting system: http://www.rainharvesting.co.uk/products/rainwater-units

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Word Count

Not Including References and Appendix: 3299Including References and Appendix: 5523

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